Air-discharging and condensation-returning apparatus.



W. T. YOUNG. AIR DISCHARGING AND GONDENSATION RETURNING APPARATUS.

APPLICATION FILED MAR. 16, 1912.

Patented July 8, 1913.

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' WALTER T. Youmzor SHERIDAN, YOMING.

AIR-DISQITARGING AND-CONDENSATION-RETURNING APP'AattATUs.

" eitiiz'en offthe Stat e s of Ameriea, residing at Sheridan, in the county ofjSherL' i dan andState of \V'yoming; have iinyented certain new and useful" lrnprovem'entfsin isehargin g and Cohdensat-ibK-Return mg Apparatus, or; whieh the'following' is. a

specification. a

This li'lYentltHllEZ-latls to an air discharg ing and eondensation returning apparatus Y for use in steam heating systems, the objectof'the inventionfbeing to provide an' i1n-:

. proved "means for collcting t hefwaterof is;

eondensa t-ion, automatigally returning said water: of condensation 'to' the. boiler, forereat'ing a vaeuum as draw-thewater ofcon I thin, and Fi dens-atien a'ndfair from the; pipes [of the heating syste'ni,-and for diseharging the air. l urtiher'objects and adx'anta ges of thein- In the acema a'nyingdrawing Figure 1 is a ;d1agrammatic View illustratingthe inven-' g; QisEa seetional' yieui gofa mil-Ye hereinafter described Referringto the drawing the numeral 5 designates'the'boiler'of aheating "system; the

iiig indicated at 6.

approximate heightfof' the water therein bej Y7designates the return-' p1 pefr0m asteamtherein, openinfi' tmvard the boiler.

rated therein which opens toward a; tank; 9 intou hicl'ythe return pipe d1scharges.- A

pipe 1-0 leads f'roinithe bottom OF-the tank 9 to the boiler filandhas a check-wake 11 F -P;

is ednne'c-ted bymeans of an' ahi with the tank 9Q: A siphon '14 'leadsfmmlanddischarges-into trap 12. An air leads from the top of trap 12 and hasaifoutu'ardly opening check valve 16 lever 18 that is pivoted at '19 within. the trap,

I A link 20 connects lever1=8 "witha bar'- located thereinf A float-Li? is carried by a Thebar 21 is connected with thestenr 22 of an air Valve 23. A spring-24 bears between a head 25 of valve stem "Ziand a .valve.

' valve seat' ring 26 andhormally tends to close valve- 23. The-- steam valve 274s mounted UP. 11a 'stemg28-which is likewise connected 1: the bar 21 Upward movement oft-he floatseats the aitvalve and unseats the steam-valve.

'29-: is in communication'withithe' b filer through a pipe 30,-in' W'hlCll.-iS .p rtn idect-a controlling valve 3L. Thetrap 12 is-in communication with the pipe,.10}- thr0ugh th medium of acomparativelysmalldrain pipe 32;, this drain pipe having a eheck valve 33 located therein which opensvfrom the trap and toward the pipe 10.

The operat-ion'of the T his water A steam valve casing.

device is as follows; The ,wateixof condensation from the return I pipe 7 collects in the tank 9;

cannot-back up intothe traplflbeause of the check valve 33 andiit will noteiiter the boiler "because. thboiler pressure holds; 'checkvalve'llflel'osed, v When theivater'fin thetankrises above thehti'izontabportion 1450f siphon 14, this siphon starts to dis:

charge into the trapi.- l2. ll he enoughyvaterhas'been d scharged 1nt0 ,t; l 1e trap.12 to ra se float 17, the steam valvefijjisepened and the air vjalre iselosed. ,Stean rthereupon' enters the trap through ipe-3p t'equalizes the'pressur ei Within the boile boiler through pipe 1Q pastcheektll and through pipe 32 past check Pipeill rs made small in comparison with pipelO to PIQYQllt thetrap fronrl emg drained sun-a1 idly that, the float will'des'ceiid and close the steam ralre before the tank 9 'iS'QlflPilQd'; \Vhen'the tank t and the traptli are silhstantially empty, the lloat (ltcloses the steaiiii'alve and opens the air steam in the trap 12 hutuut'uutler pressure. Asithis steam eond cnses. a vacuum is createdin the trap which (Iran's the air and water COllLltillSfltlOll through" the return [HINL The creation of this-\taciumi lfi'l't'lltltlttl pus sible despite the opouingut the air valve 13. by reason ofj the fact, that the (-heck valve l6 ,ft -a 12 and tank 9, whereupon, tl'iewvateit ee ntamed' Within tank 9 and-trap 12 will fio vfn it o t he uulsafnd' This'rleares a Certain amount :ot

Io ens 'onIy outwardly and prevents inward flowofair to the trap 12 during such condensation of the steam and creation of the vacuum.

To prevent steam. passing out through check valve 16 under normal conditions, an expansion valve15 islocated in pipe 15, the heat of the steam causing this valve to close. Valves of this nature are well known in the art, and it is thought no further description is required. The valve 15 closesonly when steamis present intrap 12 and the parts are in the position shown in the drawing. After the valve 27 closes and valve 23 opens, sufiiq c1 en t steam is left in the trap and in the piping, and in tank 9 to cause the escape of steam past check valve 16 if the valve 15- were not provided. .As soon as valve 23 opens and valve 27 closes the contact of the steam with valve 15*;causes said valve to close and thereby prevents the escape of steam past check valve 16 between the time of closing of valve 27and the condensation of. the steam within the trap. After the steam condenses and only air is. presentin 'trap 12, the cooling of the valve15 causes ittoopen topermit the escape of the air, as hereinb'efoie set forth,-the outward flow of theair at this time being caused by the rise 30 of the water in trap 12.4 The valvel5 is shown in section in Fig. 2, and by referringto this figure it will be seen that the valve comprises a casing having a valve seat 15 An expansive stem'l5 carries a valve 15" which when the stem expands under the influence of the'heat of the steam, closes the port 15 'The stem-15 is supported by a spider 15 A 5 From the-foregoing description it will be seen that simple and eificient means are herein provided for accomplishing the objects of the invention, but while the elements shown and described are well adapted to servethe purposes-for which they, are'invention is not limitedtto the 'preciseliconw .struction set forth, but includes within-its purview, such changes as may be made" tended, it is to be understood that the in-v within the scope of the appended claims.

- aving described my invention what claim is..

trap body and having an outwardly opening check valve therein and an air valve a nd a steam valve actuated-by movement of the v float of the trap, upward movement of the float serving to open the steam valve and close the'air valve.

2. In a device of the characterdescribed,

the combination with a steam heating boiler,

a return pipe from the steam heating system, a tank into which the return-pipe discharges, a pipe leading from the lower portion of the tank to the boiler and having a check valve located therein opening to ward the boiler, a float controlled trap body,

a siphon leading from the tank and discharging into the trap body, means for conducting steam to' the'trap body -from the boiler, an air pipe leading to the atmosphere from the trap body and having an outwardly openingcheck valve therein, an air valve and a steam valve actuated by move-v ment of the float of the trap, upward movement of the float serving to'openthe steam valvev and close'the air valve, and an air pipe leading from the upper portion of the tankto the upper-portion of the trap body. I 3. In a'device of thecharacter described,

a return pipe from'the steam heating system, atan-k intofwhich the return pipe dis charges, a pipe leading from the lower portion of the tank to the 'boiler'and having a the combination with a steam heating boiler,

check valve located therein opening toward the boiler,- a float controlled trap body, a siphonleading from the tank and discharging into the trap body, means-for conducting 'steam to the trapbody from the boiler, an

air pipe leading to the atmosphere from-the trap body and-having an outwardly opening check valve therein, an air valve and a steam valve actuated by movement of the float of the trap, upward movement of the float serving to open the steam valve and close the airvalve, and a drain :pipe leading from the lower portion ofthe trap body to the pipe 'that leads from the lower ort on of the tankto the boiler, said drain, pipe having a check valve therein which opens toward the pipe to whichjt leads.

4. In a device of the character described, the combination with a steam heating boiler, a return pipe from the steam heating system, a tank intowhich the return pipe disages, a pipeleading from the lower por tion of the tanKto the boiler and having a check valve located therein opening toward the boiler, a float controlled trap body, a siphon leading from the tank and discharging into the trap body, means for conducting steam to the trap body from the boiler, an air pipe leading to the atmosphere'from the trap body and having an outwardly opening check valve therein, an airvalve and a steam valve actuated by movement of the float of the trap, upward movement of iis the float to open the steam valve pipe being considerably smaller than the and close the air valve, an air pipe leading pipe into which it discharges. 10 from the upper portion of the tank to the In testimony whereof I aflix my signature trap body. a drain pipe leading from the in presence of two witnesses.

5 lower portion of the trap body to the pipe \VALTER T. YOUNG.

that leads from the tank to the boiler, and \Vitnesses: 'a check valve in said drain "pipe which opens S. DOANE,

toward the pipe to which it leads, said drain H. FLOYD. 

